.ws1200{
    width: 1200px;
    margin: auto;
}
* {
    margin: 0;
    padding: 0;
}
.fl {
    float: left;
}
.fr {
    float: right;
}
.clearfix {
    clear: both;
}
li {
    list-style: none;
}
body {
    background-color: #f3f3f3;
}
.head {
    width: 1200px;
    margin: auto;
    font-size: 18px;
    color: #3c3d46;
}
li {
    list-style: none;
}
.nav li {
    float: left;
    width: 80px;
    height: 72px;
    margin-right: 24px;
    line-height: 72px;
    text-align: center;
}
.nav {
    margin-left: 159px;
}
.logo {
    margin-top: 7px;
}
.logo img {
    vertical-align: middle;
}
.act {
    background-color: #5696ff;
    color: #ffff !important;
}
.login {
    /* 这里单独加行高，是因为 line-height 属性会影响 img 元素*/
    line-height: 72px;
}
.head .line {
    margin: 0 10px;
}
.second_head{
    height: 60px;
    background-color: #666666;
}
.head_search,.head_person,.head_history,.comment{
    width:100px;
    margin-top: 19px;
}
.second_head .icon{
    width: 22px;
    height: 22px;
    margin-left: 39px;
}
.bottom{
    background-color: #5696ff;
    height: 130px;
    margin-top: 65px;
    padding-top: 36px;
}
.bottom .info{
    width: 658px;
    margin: auto;
    color: white;
    font-size: 16px;
    line-height: 34px;
}